1135428031 has 4 divisors (see below), whose sum is σ = 1135499512. Its totient is φ = 1135356552.

The previous prime is 1135428017. The next prime is 1135428061. The reversal of 1135428031 is 1308245311.

It is a happy number.

1135428031 is a nontrivial binomial coefficient, being equal to C(47654, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(1135428031) divides (1135428031-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1135428031 - 2⁵ = 1135427999 is a prime.

It is a super-2 number, since 2×1135428031² = 2578393627161073922, which contains 22 as substring.

It is a deceptive number, since it divides R_1135428030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135428001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 47653.

It is an arithmetic number, because the mean of its divisors is an integer number (283874878).

Almost surely, 2^1135428031 is an apocalyptic number.

1135428031 is the 47653-rd triangular number and also the 23827-th hexagonal number.

1135428031 is the 15885-th centered nonagonal number.

1135428031 is a deficient number, since it is larger than the sum of its proper divisors (71481).

1135428031 is an equidigital number, since it uses as much as digits as its factorization.

1135428031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71480.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1135428031 is about 33696.1129954183. The cubic root of 1135428031 is about 1043.2455412275.

The spelling of 1135428031 in words is "one billion, one hundred thirty-five million, four hundred twenty-eight thousand, thirty-one".